dash to train station and back?
another connection question with a twist. I have a 2-hour (well, 110 minutes)connection in FRA(inbound from Canada LH495, on to Venice LH4082). I've read all the way through this excellent guide and understand that I will at some point be outside the secured zone. At that point, I would like to dash over to the Fernbahnhof to buy a BahnCard for my minor daughter (have to appear in person to prove she's under 18). I will need this card when we re-enter Germany a month later by train. I have a general idea from internet research where the station is but have not been there.
We have carry-on only, but boarding passes are issued only onsite, not in advance. No status, coach seats.
What do you think are the chances I could do this, and make it back through security to the gate for Venice in enough time?